- Wanna Fly
- Posts: 1
- Joined: Tue Oct 22, 2019 2:10 pm
- Closest Airfield: KUDG
- Location: Florence
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Starts are much easier.
Engine runs noticeably smoother.
High reliability (2400 hour TBO).
Low cost: $1,250 - 4 cylinder and $1,550 - 6 cylinder
In the timing advance mode you should see a performance improvement. In a test I ran, I saw about a 4 to 5 knot improvement in cruise.
I would also expect to see an improvement at high altitudes (increased spark energy and no susceptibility to arcing issues like a conventional mag), but haven't run a comparison.
It is supposed to work with an EI electronic tach, but I am still working to resolve that. The only time it is an issue is during a mag check: I get zero RPM displayed when switching to the SIM. Incidentally, the only time I can sense a drop in RPM is when switching to the remaining mag: the SIM runs smooth as silk when selected.
I have been fighting high oil temp problems that could be partially related to the SIM, but thanks to Richard Floyd's posting on "The Real Cause of high Oil Temps", I have solved this issue.
Lycoming has announced at Oshkosh that they are remarketing the SIM under their name "EIS".